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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
9 2 8
2 6 3 ×
3 × 8 =
24
3 × 20 =
60
3 × 900 =
2700
60 × 8 =
480
60 × 20 =
1200
60 × 900 =
54000
200 × 8 =
1600
200 × 20 =
4000
200 × 900 =
+ 180000
244064